alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET POLICY Vulnerable Java Version 13.0.x Detected";
flow:established,to_server;
flowbits:set,ET.http.javaclient.vulnerable;
http.user_agent;
content:"Java/13.0.";
threshold:type limit, count 2, seconds 300, track by_src;
reference:url,www.oracle.com/technetwork/java/javase/13u-relnotes-5461742.html;
classtype:bad-unknown;
sid:2028869; rev:5;
metadata:affected_product Java, attack_target Client_Endpoint, created_at 2019_10_18, deployment Perimeter, confidence High, signature_severity Informational, updated_at 2023_12_13;
)